Inhalation of excessive formaldehyde can lead to the emergence of headaches, but also dizziness, nausea, chest tightness, vomiting and other symptoms, but also irritation of the eyes tearing, sore throat, palpitations, loss of appetite, fatigue, insomnia and other symptoms. Because formaldehyde has a serious role in causing genetic mutation, excessive formaldehyde in the environment, the body’s chronic absorption will lead to the emergence of leukemia, aplastic anemia and other blood system disorders, but also lead to other systemic tumors, such as nasopharyngeal cancer. Formaldehyde has an irritating effect, mainly in is the stimulating effect on the skin mucous membranes, can appear breathing difficulties, leading to pneumonia, laryngeal edema, and even cause respiratory failure, pulmonary edema and so on. It can also lead to skin allergies, elevated transaminases, so it is important to focus on the formaldehyde content in the environment to meet the standard.